为什么Hartl Tutorial 9.2.3打破了redirect_back_or方法?错误的参数数量错误?

时间:2013-12-12 23:51:51

标签: ruby-on-rails ruby railstutorial.org

我在Hartl教程第9.2.3节的测试中得到了这个错误

1) Authentication signin with valid information 
 Failure/Error: click_button 'Sign in'
 ArgumentError:
   wrong number of arguments (0 for 1)
 # ./app/helpers/sessions_helper.rb:34:in `redirect_back_or'
 # ./app/controllers/sessions_controller.rb:11:in `create'
 # (eval):2:in `click_button'
 # ./spec/requests/authentication_pages_spec.rb:37:in `block (4 levels) in <top (required)>'

它来自会话控制器中的这种方法:

应用程序/控制器/ sesssions_controllers.rb

def create
  user = User.find_by_email(params[:session][:email])
  if user && user.authenticate(params[:session][:password])
  sign_in user
  redirect_back_or user
  else
  flash.now[:error] = "Invalid email/password combination"
  render 'new'
end 

'redirect_back_or'方法来自会话助手: 应用程序/助手/ sessions_helper.rb

def redirect_back_or(default)
  redirect_to(session[:return_to] || default)
  session.delete.(:return_to)
end 

在此之前,会话控制器创建方法将...

redirect_to user

将其更改为redirect_back_or几乎失败了我的所有测试。使用redirect_to用户已经通过了大部分测试。

以下是相关测试: spec / requests / authentication_pages_spec.rb

describe "Authorization" do

describe "for non signed in users" do                    
  let(:user) {FactoryGirl.create(:user) }                

  describe "when attempting to visit a protected page" do
    before do
      visit edit_user_path(user)                         
      fill_in "Email", with: user.email                  
      fill_in "Password", with: user.password            
      click_button "Sign in"                             
    end                                                  
    describe "after signing in" do                       
      it "should render the desired protected page" do   
        page.should have_selector('title', text: "Edit user")
      end
    end
  end
end

我不知道该怎么做。为什么我得到错误的参数数量错误?

我已经回过头了但是我不确定要去哪里。我觉得我仔细检查了书中的所有代码......但我仍然得到这个错误。 谢谢你是另一双眼睛。请帮我解决这个问题。

1 个答案:

答案 0 :(得分:1)

此行中有一个额外的点:

session.delete.(:return_to)

将其更改为:

session.delete(:return_to)